课程标准特别提出数学教学是数学活动的教学,数学活动是学生经历数学化过程的活动,是学生自己构建知识的活动,这充分表明学生应该是数学学习的主人。教学中,教师要紧密联系学生的实际,从学生的生活经验和已有知识体验出发,创设生动有趣的情境,让学生在情境中体验到生活化数学的乐趣;引导学生分组操作,让学生在分组操作中体验到同伴合作的力量;针对学生不 Curriculum standards especially put forward that mathematics teaching is the teaching of mathematics activities. The mathematics activities are the activities of students going through the process of mathematics and activities of students constructing their own knowledge, which fully shows that students should be the masters of mathematics learning. Teaching, teachers should closely contact with the students ’actual experience, starting from the students’ life experience and experience of existing knowledge, creating vivid and interesting situations for students to experience the fun of living mathematics in the context; guiding students to group operations so that students Experience the power of teamwork in teamwork; not for students